Keyphrases
- document collections
- information retrieval systems
- information retrieval
- document classification
- legal documents
- document clustering
- metadata
- xml documents
- web documents
- document retrieval
- digital documents
- digital libraries
- time stamped
- data sets
- distributed information retrieval
- query terms
- semantic information
- database
- relevant documents
- retrieval systems
- parallel processing
- vector space model
- semantic relationships
- structured documents
- expert finding
- question answering
- information extraction
- keywords